GA102 = Economy Machinist's Square 2'' x 3'' Steel

Very useful in measuring 90 degree angles and checking the "straightness" of an edge or surface. A very useful tool in design. There is even a small notch at the inside corner of the square to prevent dirt or debris from accumulating and affecting how the square reads. Measures approximately 2" (50mm) x 3" (76mm) and is made of steel.